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Anonymous users2024-02-07Here are two ways to measure it.
Digital Multimeter:
Adjust the pointer to zero.
Depending on the measurement object, the gear and range are selected correctly.
Pay attention to the polarity of the table pen and try not to reverse it.
Before measuring the resistance, the two meters are shorted and adjusted to 0.
Pin Multimeter:
1. Select the gear (there are 1, 10, 100, 1k, etc.), then put the two watch pens in direct contact, adjust the zeroing resistance (the potentiometer can be rotated) so that the pointer points at the 0 ohm scale. (This step is called "resistance zeroing").
2. Then connect the two meter pens with the two ends of the resistor to be measured respectively (note that this resistor should not be connected to other circuits), then the resistance value of the resistor is the indication * multiple.
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Anonymous users2024-02-06To measure voltage with a pointer multimeter, you first have to select the gear correctly, and then you have to select the range correctly.
The multimeter can measure voltage, current, resistance, etc., when the voltage needs to be measured, it is necessary to distinguish whether to measure AC voltage or DC voltage, and the gear knob should be placed in the corresponding gear. When measuring voltage, the two pencils are connected in parallel at both ends of the circuit, and when measuring the DC voltage, the red pencil needs to be connected to the positive pole of the power supply, and the black pencil is connected to the negative pole of the power supply.
Then estimate the measured voltage, if the voltage can not be estimated, first select the maximum range for **, according to the voltage value of **, select the appropriate range for accurate measurement.
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Anonymous users2024-02-05How to measure voltage using a multimeter.
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Anonymous users2024-02-04The main function of a digital multimeter is to measure voltage, resistance, and current.
A digital multimeter, a multi-purpose electronic measuring instrument, generally contains functions such as ampere meter, voltmeter, ohmmeter, etc., and is sometimes called a multimeter, multimeter, multimeter, or triple meter.
Digital multimeters have portable devices for basic fault diagnosis and are the main electronic instruments used in electrical measurements. It can have many special functions, but the main function is to measure voltage, resistance and current, digital multimeter, as a modern multi-purpose electronic measuring instrument, mainly used in physical, electrical, bent electronics and other measurement fields.
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Anonymous users2024-02-03The details are as follows:
Put the ON OFF switch to the ON position, check the 9V battery, if the battery voltage is insufficient, it will be displayed on the display, then the battery needs to be replaced. If the display does not appear, follow the steps below.
The symbol next to the test pen jack indicates that the input voltage or current should not exceed the indicated value, which is to protect the internal wiring from damage.
Before the test. The function switch should be set to your desired range.
A digital multimeter, a multi-purpose electronic measuring instrument, generally contains ampere meter, voltmeter, ohmmeter and other functions, sometimes called a multimeter, a multimeter, a multimeter, or a triple meter.
The digital multimeter is suitable for basic fault diagnosis of the portable installation and inspection finger start, there are also devices placed on the workbench, and some resolutions can be achieved.
Seventh, eighth.
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Anonymous users2024-02-02Here's how to use an analog multimeter:Material Tools: Pointer multimeter, battery.
1. Place the multimeter horizontally and observe the position of the pointer.
2. Adjust the pointer so that it points to the zero scale.
3. According to the items measured by the stupid slip, modulate the gear to ohmic gear, current gear, or voltage gear.
4. Adjust the range to the maximum first, and adjust it slowly in the later stage of hail loss, so as not to burn out the multimeter.
5. After measuring, read out the value of the source file god pointer.
The bad part is the transformer, the transformer in the circuit can be used for the audio output transformer for transistor radio, the secondary is used as the primary of the step-up transformer, the tap in the middle of the primary is not used, and the taps at both ends are used as the secondary of the step-up transformer. If you can't find a suitable transformer, you can also use the silicon steel sheet of the radio output transformer to make your own, and use a high-strength enameled wire with a diameter of 0 25mm for 110 turns for the primary stage, and a high-strength enameled wire with a diameter of 0 21mm for 520 turns for the secondary. A layer of insulating paper should be added between the primary stages, and attention should be paid to the eponymous end of the primary stage coil. >>>More
The principle and maintenance of pointer multimeter, the role of components, maintenance methods, and internal structure are explained in detail.
Looking for faults should be first outside and then inside, easy first and then difficult, and the whole should be broken into zero, and the key breakthroughs should be made. The methods can be roughly divided into the following types:1 >>>More
Turn the digital multimeter to the current gear, take the red and black stylus to the two sides of the contact switch under the float, there is a current display to prove that it is energized, and there is no current display to the line is faulty.
It is judged by the method of appearance and manual adjustment. >>>More